Home / 28,509.20-42,763.80-7,732.70

Finding the Fourth Proportional to 28,509.20, 42,763.80 and 7,732.70

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Solution

The fourth proportional to 28,509.20, 42,763.80 and 7,732.70 is: 11,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.20 : 42,763.80 = 7,732.70 : x
  2. Step 2: Convert to fraction form
    28,509.20/42,763.80 = 7,732.70/x
  3. Step 3: Cross multiply
    28,509.20x = 42,763.80 × 7,732.70
  4. Step 4: Simplify right side
    28,509.20x = 330,679,636.26
  5. Step 5: Solve for x
    x = 330,679,636.26/28,509.20
  6. Step 6: Final answer
    x = 11,599.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.